QIMR Berghofer scientists have uncovered hundreds of genes that play a role in the growth of both moles and melanoma, in a discovery that could lead to new ways of preventing and treating the deadliest form of skin cancer. The world's largest genetics study of "moliness," published in Nature Communications, is unraveling the complex causes of both moles and melanomas that are not related to well-known risks caused by sun exposure, skin color and pigmentation.